A new line break for files created under Windows ^m causes the shell script under Linux to run the wrong solution

Files that are often edited under Windows are sent to Linux remotely, ^m at the end of each line, which causes the shell script to run incorrectly, mainly because the editor under dos and the editor under Linux are inconsistent with the carriage return of the last line of the file .

The main solutions are as follows:

(1) Delete the ^m in the VI editor :

To switch the VI Editor to command mode, enter:%s/^m//g (note that ^m is not shift ^ +m but Ctrl + V plus ctrl+m) s///g is the shell's replacement command

This command must be manually punched and not replicable.

(2)Dos2unix command

Dos2unix filename

A new line break for files created under Windows ^m causes the shell script under Linux to run the wrong solution